Home / 917,686.14-1,376,529.21-356,851.86

Finding the Fourth Proportional to 917,686.14, 1,376,529.21 and 356,851.86

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Solution

The fourth proportional to 917,686.14, 1,376,529.21 and 356,851.86 is: 535,277.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,686.14 : 1,376,529.21 = 356,851.86 : x
  2. Step 2: Convert to fraction form
    917,686.14/1,376,529.21 = 356,851.86/x
  3. Step 3: Cross multiply
    917,686.14x = 1,376,529.21 × 356,851.86
  4. Step 4: Simplify right side
    917,686.14x = 491,217,008,932.83
  5. Step 5: Solve for x
    x = 491,217,008,932.83/917,686.14
  6. Step 6: Final answer
    x = 535,277.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.